XML 125 R113.htm IDEA: XBRL DOCUMENT
v3.23.1

Statutory Financial Information and Dividend Limitations (Details Narrative) | Dec. 31, 2022 USD ($)
--- | ---
Liability for Catastrophe Claims [Line Items] |
Cash dividend paid | $ 6,420,000
First Guaranty Insurance Company [Member] |
Liability for Catastrophe Claims [Line Items] |
Cash dividend paid | 710,000
Kilpatrick Life Insurance Company [Member] |
Liability for Catastrophe Claims [Line Items] |
Cash dividend paid | $ 1,650,000

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_LiabilityForCatastropheClaimsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of dividends that can be declared or paid without approval of regulatory agency. + References No definition available. + Details
Name: | us-gaap_StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=SNFCA_FirstGuarantyInsuranceCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=SNFCA_KilpatrickLifeInsuranceCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |